I've just remembered one of my players who plays a rogue and is armed with a Chain Spike. Not a very subtle weapon. The main problem is that if he has to use Move Silently in order to get someone flat-footed, which penalties should I apply to the check. Didn't some wepons need to have a kind of check penalty for Move Silently? Anyway, which penalty should you apply? I think a -4 is fair.